Time Spiral

All Slivers have "Sacrifice this permanent: Add {B}{B}."

Flying {2}: Search your library for a Dragon permanent card and put it into your graveyard. If you do, Scion of the Ur-Dragon becomes a copy of tha...

Whenever you cast an artifact spell, you may search your graveyard, hand, and/or library for a card with the same name as that spell and put it ont...

Whenever an opponent casts a spell, Kaervek the Merciless deals damage to any target equal to that spell's converted mana cost.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Until end of turn...

Each player loses 1 life, discards a card, sacrifices a creature, then sacrifices a land.

Flying {1}{B}, Exile Sengir Nosferatu: Create a 1/2 black Bat creature token with flying. It has "{1}{B}, Sacrifice this creature: Return an exiled...

All Slivers have "At the beginning of your upkeep, this permanent deals 1 damage to you."

Haste Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever another creature is put into your graveyard from the b...

Whenever you cast a creature spell, create X 1/1 black Thrull creature tokens, where X is that spell's converted mana cost. When you control seven ...